This is the cover for the Carbon Grey graphic novel that my friends and I are working on for the past 9 years. The first 3 issues are finally collected into a trade paperback.
You can pick it up on Amazon or here: http://www.liquidbrush.com/category-s/1822.htm
Here is a brief synopsis of the story:
To a noble family twins are born; Mathilde and Giselle, the Sisters Grey. For centuries the Greys have protected the Kaiser, ruler of Mitteleuropa - but this is a different time. At the dawn of the Industrial Age a great war rages. When the Kaiser is found dead Giselle is accused of his murder. Pursued by her sisters and hunted by the enemy, Giselle must unravel the prophecy of the Carbon Grey before history itself is rewritten.